00:01
Hello, in the question we have given that on a particular day the weather forecast states that the dry bulb temperature is 37 degrees celsius.
00:10
So, we have given the temperature that is 37 degrees celsius.
00:13
So, this is the dry bulb temperature.
00:16
So, while the relative humidity is 50 % and the barometric pressure is 101 .325.
00:23
So, we have given this pressure.
00:24
So, that is 101 .325 kilo pascals.
00:31
Find humidity ratio, dew point temperature and enthalpy of the moist air on this day.
00:36
So, now first of all we will use the steam chart and from that we will get the relate this partial pressure or say equilibrium vapor pressure of water.
00:51
So, we will get the so if we use the chart so from that at 37 degrees celsius we will look at 37 degrees celsius.
01:02
So, we will get this p star of h2o that is equals to so that should be equals to 6 .276.
01:18
So, it is 2 .6 .276 kilo pascal.
01:23
So, this is the equilibrium vapor pressure of the water.
01:28
Then now we will use the relative we have to find out the relative humidity.
01:34
So, the relative humidity so it is given by phi.
01:42
So, that is given by e of so this is partial pressure of water vapor divided by the equilibrium.
01:54
So, now if we plug the values so here we will find out this partial pressure.
02:01
So, now relative humidity so this ph2o then will be equal to so 5 times this thing.
02:14
So, if we calculate this so this will be 0 .5 because this relative humidity they have given to be 50 percentage...